107121955 has 4 divisors (see below), whose sum is σ = 128546352. Its totient is φ = 85697560.

The previous prime is 107121953. The next prime is 107122003. The reversal of 107121955 is 559121701.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 107121955 - 2¹ = 107121953 is a prime.

It is a super-2 number, since 2×107121955² = 22950226486044050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (107121953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10712191 + ... + 10712200.

It is an arithmetic number, because the mean of its divisors is an integer number (32136588).

Almost surely, 2^107121955 is an apocalyptic number.

107121955 is a deficient number, since it is larger than the sum of its proper divisors (21424397).

107121955 is an equidigital number, since it uses as much as digits as its factorization.

107121955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21424396.

The product of its (nonzero) digits is 3150, while the sum is 31.

The square root of 107121955 is about 10349.9736714641. The cubic root of 107121955 is about 474.9262378536.

The spelling of 107121955 in words is "one hundred seven million, one hundred twenty-one thousand, nine hundred fifty-five".